3 citations · 6 across the 7 of their papers we have counts for
7 papers
Semi-classical Imprint of Horizon Induced Instability
Arnab Chakraborty, Onirban Islam, Arshad Momen
We consider an inverted harmonic oscillator in the space of square-integrable functions on the circle and compute its density of states employing…
A Lorentzian Equivariant Index Theorem
Onirban Islam, Lennart Ronge
We develop a formula for the equivariant index of a twisted Dirac operator on a compact globally hyperbolic spacetime with timelike boundary on which a group acts isometrically, su…
A Gutzwiller Trace formula for Dirac Operators on a Stationary Spacetime
Onirban Islam
A Duistermaat-Guillemin-Gutzwiller trace formula for Dirac-type operators on a globally hyperbolic spatially compact stationary spacetime is achieved by generalising the recent con…
A Gutzwiller Trace formula for Dirac Operators on a Stationary Spacetime
Onirban Islam
A Duistermaat-Guillemin-Gutzwiller trace formula for Dirac-type operators on a globally hyperbolic spatially compact stationary spacetime is achieved by generalising the recent con…
On microlocalisation and the construction of Feynman Propagators for normally hyperbolic operators
Onirban Islam, Alexander Strohmaier
This article gives global microlocalisation constructions for normally hyperbolic operators on a vector bundle over a globally hyperbolic spacetime in geometric terms. As an applic…
Relative entanglement entropy of thermal states of Klein-Gordon and Dirac quantum field theories
Onirban Islam
An upper bound of the relative entanglement entropy of thermal states at an inverse temperature of linear, massive Klein-Gordon and Dirac quantum field theories across two regi…
Relative entanglement entropy for widely separated regions in curved spacetime
Stefan Hollands, Onirban Islam, Ko Sanders
We give an upper bound of the relative entanglement entropy of the ground state of a massive Dirac-Majorana field across two widely separated regions and in a static slice…